Lock



Jan. 24,1939. A Q ANDERSEN 2,144,672

LOCK

Filed Feb. lO. 1957 2 Sheets-Sheet l INVENTOR. /VDREW UHF/sr/A/V NDEfasE/ MWJ ATTORNEYS.

Jam 24, 1939- A. c. ANDERSEN 2,144,672

LOCK

Filed Feb. l0, 19.37 2 Sheets-Sheet 2 @L M .fw/ *M ATTORNEYS.

Patented Jan. 24, 1939 l UNITED STATES PATENT CFFICE LOCK Andrew Christian Andersen, Detroit, Mich., as-

signor to Ternstedt Manufacturing Company, Detroit, Mich., a corporation of Michigan Application February 10, 1937, Serial No. 125,022 8 Claims. (Cl. 292-465) This invention relates to a lock and more parspring and the position of the several parts when ticularly to an automobile lock of the class shown the lock is unlocked and the bolt projected. in the Andersen-Bowlus Patent No. 2,039,873. Fig. 2 is similar to Fig. 1 except that the bolt The lock shown in the Andersen-Bowlus patent and the several parts of the lock are shown in is of the semi-freely rotatably outside door hanretracted position. 5 dle type, that is, the outside door handle is locked Fig. 3 is similar to Fig. l except that the lock by disconnecting the outside rollback from the is locked and the outside door handle disconnectlatch bolt whereupon swinging of the outside ed from the bolt. door handle is ineffective to retract the bolt. Fig. 4 is similar to Fig. 3 but in addition shows When the lock is in locked position, the outside the condition of the parts when the bolt is pro7 l0 door handle is held in horizontal position solely jected, the lock is unlocked and the outside rollby the bolt spring. Although the Andersenback and door handle has been turned from its Bowlus lock has had, and is enjoying, great comnormal horizontal position to bolt-retracting mercial success and was a. great advance in the position.

automobile lock art, some difficulty has been ex- Referring more particularly to the drawings l5 perienced, particularly with the advent of the there is shownalock identical with that shown in much heavier die-cast outside door handles, in the Andersen-Bowlus Patent 2,039,873. This lock that when in locked or semi-freewheeling posicomprises a latch frame I carrying a leCiDrOCattion the door handle, upon being swung downing bolt 2. The bolt 2 carries a convolute spring wardly to retract the boit, does not always upon 3, the outer end of which acts against a lever 4 20 being released return to the normal horizontal DiVOiJed aS at 5 0n the latch frame l. The other position. This difficulty could be remedied by end 6 of the lever 4 abuts, and acts against, the increasing the strength of the bolt spring or by outside rollback 1. A connector 8 is pivoted as at providing the outside rollback with an auxiliary 9 t0 the lever 4 The D011? iS DTOVded with an spring for returning the handle, when in locked abutment I0 against which the lever 8 abuts in 25 or semi-freewheeling condition, back to its northe relilaCtOn 0f the bOlt. The lever 8 is also mal horizontal position, This solution of the provided with e depending iinser terminating in problem is disadvantageous in that when the'lock an outwardly turned lug ll Which Slidably enis unlocked and the outside rollback connected gages e lever l2 in the slot I3. The lever l2 is to the boit, then in retracting the bolt thc outside pivoter! te the rollback cover plate I4 es at I5. 30 door handle must overcome the resistance in the The IOllback iS DIOVided With a Square Opennrst case of a much stronger bolt spring or in the ins I6 which iS adapted te receive the square second case the combined resistance of the bolt Shank 0f any 0f the Well-knOWri and COIlVentiOal spring and the auxiliary spring acting against Outside door handles such as shown in Fig. l1 of the outside rollback. the Andersen-Bowlus patent. Itlsthe object of this invention to overcome the AS ShOWD in Fig 3. the Connector 8 has been above-mentioned disadvantage in this type of Swung about its pivot 9 and disconnected from 103k and assure the return of the Outside door the latch bolt abutment In. When the level i2 handle to horizontal or normal position without l5 swung upwardly 0f downwardly about lts Divot in anywise increasing the spring resistance that l5 the lug ll Slldlllg lll Slot I3 Causes the C011- 40 must be overcome when the lock is unlocked and lector s to corfesPondlngly swlng upwardly 0r the outside door handle is turned to retract the downwardly about lts plVOt 9- The lever l2 Can bolt. This Object is achieved by means of an be swung upwardly or downwardly about its pivot auxiliary spring which, when the lock is locked I5 m any Well'known manner from Within the by means of the interior push rod release 45 4o and the outside door handle and rollback in semicar freewheeling condition, acts to assist the return shown in the Andersen-Bowl Patent 2039873 s Vor by a snap over center lever such as shown in 0f thE OlllSlde hmdle l0 normal Posltlm and thc simpsoncpatcnt 2,o'12,317,.from without the which 1s inoperative and disconnected from the car bythe hymn/rolled mechanism shown in outside rollback and door handle whenever the these patents This 'races the outside d oo h lock is unlocked and the outside door handle condle 1n' locked or vs@gli freewheelmg positonglo 50 nected to the-b01t that turning of the outside door'handle is ine In theflfawlngsl rectivc to retract the boit. At this time the`V` Fig. 1 1s a view of a lock, such as shown in the outside door handle, which is rigidly connected 5 Andersen-Bowlus patent, with the auxiliary to the outside rollback 1, isheld in normal position. which, for descriptive purposes is shown as horinontal, by the torce of the bolt spring l acting through lever 4, the lower end l ot which holds the rollback nnger against the selvage plate l1 of the latch plate as at Il.

It, while the lock is in the locked position, shown in Fig. 3, the outside door handle be turned downwardly and the rollback thereby rotated counterclockwise, the connector l is shifted thereby to the lei't, as shown in Pig. 4, and the rollback swings the lever 4 clockwise about its pivot I. This turning of the lever 4 increases the tension of, or stress on, the spring l. In this position o1 the lock. Fig. 4, the bolt spring I, acting again through the lever 4 and rollback 'l tends. when the outside door handle Il (indicated in dotted lines) is released, to return the outside door handle to normal horizontal position and the rollback to its normal position against the selvage plate, as shown in Fig. 3. However, the strength of the presently used spring has been insuilicient in some cases to overcome the i'rictiono! the several pivoted and shiftable parts,V

such as I and I2. and the weight oi' the outside door handle and consequently the door handle has remained in drooped position and not returned to its normal position which, for descriptive purposes, may be taken as horizontal. To assist the return oi the outside door handle to its normal position without increasing the resistance that must be overcome in the swinging oi.' the door handle to retract-the latch bolt, an auxiliary booster spring ot any desirable type. such as convolute spring Il. is aillxed to the latch frame i in any desirable manner such as by theiastener Il. The outer end Il ot the spring is positioned between the latch i'rame I and the lever I! and normally rests against an abutment 22 in the form o! a lug struck out oi' the latch frame i.

As shown in Fig. 3, when the bolt 2 is pro- Jected and the lock is locked. that is, connector I pivoted down and disconnected from abutment Il, the end 2| oi' the booster spring Il is preferably. but not necessarily. spaced slightly from the lug Il. However, if the outside handle and the rollback now be turned in bolt retractlng direc-4 tion, the connector I will clear the abutment Il and. of course, not retract the bolt. However. as

. the connector l shifts or travels to the lei't from the position showninll'lg.3tothatshownin llg.4.thelug Il strikestheend 2| ofthespring and stresses the same. Now upon release o! the outside handle the force ot the spring 2l acting through lug Ii, connector l and lever 4 portion of their travel and then is arrested the lug Il and operatively disconnected from the lug Il.

Asshowninll'igs. land 2,whenthelockis unlocked and the connector l operatively connected with the abutment il, then i! the bolt l is retracted. as shownin Fig. 2, the lug il travels clears the end 2| of the spring Il. Astheboltisretracted it will benoted that the t is placed under considerably more stressthan in the case where the handle and rollback are swung to bolt retracting position and l is disconnected from the bolt Il. as shown in Fig. 4. Therefore,

when the lock is in the condition shown in Pig. 2, the force of the spring I is, at this time, sumciently great to throw the rollback and outside door4 handle to their normal positions. At this time the assistance of the auxiliary spring il is not needed and would only increase the necessary torque which would have to be applied to the door handle to retract the latch bolt. Therefore, when the lock is unlocked, as shown in Fig. 2, during the retraction and projection of the latch bolt I, the lug il clears and does not -interact with the end 2| oi' the auxiliary spring Il.

I claim:

l. In combination with a door lock comprising a retractable bolt and shiitable bolt retracting means optionally connectable with, and disconnectable from, said bolt, said bolt retraoting means being movable from an initial position whereby, when the said bolt retracting means is connected to the bolt. the bolt is retracted during such movement and when the said bolt retracting means is disconnected from the bolt the bolt retracting means is ineilective to retract the bolt, and means operatively connected to said bolt retracting means only when the bolt retracting means is disconnected i'rom the said bolt and serving to retain the connector in its initial position.

2. In combination with a door lock comprising a retractable bolt and a connector optionally connectable with, and disconnectable from. said bolt, said connector being movable from an initial position when connected to, as well as when disconnected from, said bolt whereby, when the retractor is connected to the bolt, the bolt is retracted by the connector during such movement and when the connector is disconnected from the bolt the connector is ineirective to retract the bolt, and resilient means operatively connected to said connector only when the connector is disconnected trom the said bolt and serving to return the connector to its initial position when the said connector is moved from said initial position and only while disconnected from said bolt.

3. In combination with a door lock comprising a retractable bolt, a rollback, a connector between the said rollback and bolt for transmitting the torque of the rollback to the bolt to retract the same when the rollback is turned from a predetermined normal position, the said connector being dlsconnectable from the said bolt whereby turning of the rollback trom said initial predetermined normal position is ineffective to retract the bolt, and power means operatively connected to the said connector only when the said connector is disconnected from the said retractable bolt whereby when the rollback is turned the said power means acts against the said connector and tends to return the rollback to its initial normal position.

4. In combination with a door lock comprising a retractable bolt, a rollback and door handle, a connector between the rollback and the bolt whereby turning oi the said handle and rollback i'rom an initial normal position retracto the bolt, the said connector being disconnectable from the said bolt whereby turning oi' the rollback and door handle is ineilective to retract the bolt. and resilient means operatively connected with the said connector only when the said connector is disconnected trom the bolt whereby the said resilient means tends to retain the said bolt and handle in their normal initial position.

5. In combination with a door lock comprising a retractable bolt. a rollback and door handle, a connector between the rollback and door handle for transmitting the rollback torque to the bolt to retract the same when the handle is turned from an initial normal position, the said connector being disconnectable from said bolt to render turning of the handle ineffective to retract the bolt, and a spring operatively connected to the said connector only when the connector is disconnected from the bolt whereby turning of the door handle'from its initial normal position causes the said connector to stress the said spring and the said spring upon release of the said handle urges the same toward its initial normal position.

6. In combination with a door lock comprising a retractable bolt, a springv for projecting the said bolt, a rollback and door handle, a connector between the rollback and door handlefor transmitting the rollback torque to the bolt to retract the same when the handle is turned from an initial normal position, the said connector being disconnectable from said bolt to render the handle ineffective to retract the bolt, and a second spring operatively connected to the said connector only when the connector is disconnected from the bolt, the said connector being shifted into operative relation with the said second spring when disconnected from said bolt whereby turning of the door handle from its initial normal position causes the said connector to stress the said spring and the said connector being shifted out of operative relation with said second spring when connected to said bolt whereby the said connector is ineffective to stress the said second spring.

'7. in combination with a door lock comprising a latch frame and a retractable bolt, a spring for projecting the said bolt, a rollback and door handle, a connector between the rollback and door handle for transmitting the rollback torque to the bolt to retract the same when the handle is turned from an initial normal position, the said connector being disconnectable from said bolt to render turning of the handle ineiective to retract the bolt, a second spring operatively connected to the said connector only when the connector is disconnected from the bolt whereby turning of the door handle from its initial normal position causes the said connector to stress the said spring and whereby when the connector is connected to the said bolt the said connector is disconnected from the said second spring and ineiective to stress the same, and a stop against which the spring abuts when the handle is in initial normal position whereby the spring is spaced from, and held out of contact with, the said connector.

8. In combination with a door lock comprising a latch frame and a retractable bolt, a spring for projecting the said bolt, a rollback and door handle, a connector between the rollback and door handle for transmitting the rollback torque to the bolt to retract the same when the handle is turned from an initial normal position, the said connector being disconnectable from said bolt to render turning of the handle ineiective to retract the bolt, a convolute spring carried by the latch frame, the free end of which engages the connector only when the connector is disconnected from the bolt whereby turning of the door handle from its initial normal position causes the said connector to stress the said spring and whereby when the connector is connected to the said bolt the said connector is disconnected from the said convolute spring and ineffective to stress the saine, and a stop against which the free end of the spring abuts when the handle is in initial normal position whereby the spring is spaced from, and held out of contact with, the said connector.

ANDREW CHRISTIAN ANDERSEN. 

